The thing is, with men who jump to conclusions such as the one expressed in this thread, now I'm not bashing the initial post, but from my experience, they're insecure, unrealistic, scorned or close-minded.
One of those usually applies.
My girl lost her virginity to me and we've been together since. Has she slept with anybody else? I can't say for sure 100% as we had a long-distance relationship for a long time before we moved in, but I trust her and don't even pay the possibility any mind.
BUT, she's probably the most open, outspoken woman I've ever met when it comes to sexually-oriented conversations. Does that mean she's a slut who fukks around with other men? Nah, it just means she's comfortable in herself to express her love of sex.